Q: Gasoline pours out of the almost empty gas tank

asked by on

My car has issues with the gas tank. The last time I tried to refill it as it was almost empty, the gasoline poured out. It happened when I released the pump. What could be causing this? Thank you in advance.

A: Hi there. This is typically caused by one o...

Hi there. This is typically caused by one of two things. The most common being a bad fuel tank vent valve. This valve should open while fueling allowing the fuel vapor to be released to keep the fuel from backing up during fueling. It may also be a restriction in the fuel tank filler neck. I typically remove the neck first and make sure that there are not any issues there. If the filler is fine, then the vent valve and its hoses need to be checked. Most of the time it is the vent valve though. If you are going to have this repaired, consider YourMechanic, as a certified mechanic can come to your home or office to inspect your gas tank issue and recommend an appropriate repair.

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Emergency brake light on

The red brake light is primarily lit when you apply the emergency brake, but it also lights up when you have a hydraulic problem with the brakes. Things like low fluid levels, leaking wheel cylinders, or brake hoses can also...

Q: Crank no start on 2004 Ford Escape

Thanks for writing in about your 2004 Ford Escape. When the vehicle does not start, you need to check the fuel pressure and engine for spark. You should scan the computer to see if any codes are set that will...

Q: Van overheated, leaked, engine shut off

Hi there. This could be a variety of things related to the cooling system for your 1995 Toyota Previa. Since you just replaced the thermostat, we can theoretically rule this out. You may also want to check the coolant fan...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.